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Updated: Aug 11, 2026

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Extraction of Lignin with High β-O-4 Content by Mild Ethanol Extraction and Its Effect on the Depolymerization Yield
Published on: January 7, 2019
Lignans from the bark extract of Pinus sylvestris L
Jari Sinkkonen1, Maarit Karonen, Jaana Liimatainen
1Laboratory of Organic Chemistry and Chemical Biology, Department of Chemistry, University of Turku, Vatselankatu 2, FI-20014 Turku, Finland. jari.sinkkonen@utu.fi
Magnetic Resonance in Chemistry : MRC
|February 21, 2006
Abstract:
Three lignans were isolated from a bioactive fraction of the 70% aqueous acetone extract of the pine (Pinus sylvestris L.) bark. Their structures were identified by high-resolution positive ion EI mass spectrometry and NMR spectroscopy. The complete assignment of proton and carbon signals was achieved by 2D NMR experiments: HSQC, HMBC, DQF-COSY and NOESY.

